RectGetter constructor

RectGetter({
  1. required GlobalKey<_RectGetterState> key,
  2. required Widget child,
})

传GlobalKey构造，之后可以RectGetter.getRectFromKey(key)的方式获得Rect constructor with key passed , and then you can get child`s rect by using RectGetter.getRectFromKey(key)

Implementation

RectGetter({required this.key, required this.child}) : super(key: key);